Reflection: Discourse and Questioning Graphing Inequalities on a Number Line - Section 2: Mini Lesson


My students are always looking for patterns and shortcuts.  After the first three examples, several students observed that the lines and arrows were drawn in the same direction as the inequality pointed.  They asked if this would always be the case and I encouraged them that we would be able to answer that question after example 5.

Students concluded that when the variable is written first they can use the inequality to determine the direction of the arrow, but otherwise they should determine what values make the inequality true.  

Some of my students have difficulty interpreting inequalities, so it was beneficial to give them practice problems and determine at least two values that met the limits of the inequality.

  Student Observations
  Discourse and Questioning: Student Observations
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Graphing Inequalities on a Number Line

Unit 14: Algebra
Lesson 13 of 16

Objective: SWBAT graph one variable inequalities.

Big Idea: How do we graph infinitely many solutions to an inequality?

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graphing single variable inequalities 3
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